Re: [PATCH 1/1] virtio_pci: use common helper to configure SR-IOV

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On Thu, Sep 29, 2022 at 7:40 AM Max Gurtovoy <mgurtovoy@xxxxxxxxxx> wrote:
>
> This is instead of re-writing the same logic in virtio driver.
>
> Signed-off-by: Max Gurtovoy <mgurtovoy@xxxxxxxxxx>

Acked-by: Jason Wang <Jasowang@xxxxxxxxxx>


> ---
>  drivers/virtio/virtio_pci_common.c | 15 +--------------
>  1 file changed, 1 insertion(+), 14 deletions(-)
>
> diff --git a/drivers/virtio/virtio_pci_common.c b/drivers/virtio/virtio_pci_common.c
> index ad258a9d3b9f..67d3970e57f2 100644
> --- a/drivers/virtio/virtio_pci_common.c
> +++ b/drivers/virtio/virtio_pci_common.c
> @@ -607,7 +607,6 @@ static int virtio_pci_sriov_configure(struct pci_dev *pci_dev, int num_vfs)
>  {
>         struct virtio_pci_device *vp_dev = pci_get_drvdata(pci_dev);
>         struct virtio_device *vdev = &vp_dev->vdev;
> -       int ret;
>
>         if (!(vdev->config->get_status(vdev) & VIRTIO_CONFIG_S_DRIVER_OK))
>                 return -EBUSY;
> @@ -615,19 +614,7 @@ static int virtio_pci_sriov_configure(struct pci_dev *pci_dev, int num_vfs)
>         if (!__virtio_test_bit(vdev, VIRTIO_F_SR_IOV))
>                 return -EINVAL;
>
> -       if (pci_vfs_assigned(pci_dev))
> -               return -EPERM;
> -
> -       if (num_vfs == 0) {
> -               pci_disable_sriov(pci_dev);
> -               return 0;
> -       }
> -
> -       ret = pci_enable_sriov(pci_dev, num_vfs);
> -       if (ret < 0)
> -               return ret;
> -
> -       return num_vfs;
> +       return pci_sriov_configure_simple(pci_dev, num_vfs);
>  }
>
>  static struct pci_driver virtio_pci_driver = {
> --
> 2.18.1
>

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